WS-MAN discovery not working - where's the log?

Hi,

I'm trying to discover one of our ESXi servers over WS-MAN but it's not working. Is there a log that will indicate what the problem is (e.g. bad credentials, can't connect to the server, etc)? Otherwise I'm just shooting in the dark trying to figure out why it won't work.

We're running OME 2.0.1.2222

Thanks.